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X-PRO Series Designers manual for V1-6

1. 0 001 100m 200m 500m 1 2 5 10 20 50 100 200 500 1k W Cyan graph 100 Hz green graph 1 kHz and red graph 6 67 kHz Below a THD n 8Ohms measurement on CH 2 or 3 can be seen 10 5 2 1 0 5 0 2 0 1 0 05 0 02 0 01 0 005 0 002 0 001 100m 200m 500m 1 2 5 10 20 50 100 200 500 W Cyan graph 100 Hz green graph 1 kHz and red graph 6 67 kHz Designers Manual for Series X PRO amplifier modules Page 12 42 Version 1 6 General design precautions When designing with the X PRO series module it is important to observe the following precautions and recommendations for safe operation Acoustic air pressure IMPORTANT It is of absolute importance that the circuit boards are not being exposed to extreme vibration e g when placed directly in the acoustical volume of the loudspeakers In the case where the circuit boards are placed directly in the acoustical volume of the loudspeakers it must be secured that the mechanics is sufficiently rigid and stiff to avoid excessive vibrational levels at the circuit boards or at single components mounted on the circuit boards Water rain humidity and dus
2. i 15V 15V VER Proper decoupling GND AN 45V D of input signals and nn Proper GND plane to chassis Use a low drop 5V LowDrop 7V decoupling is essential for EMI reg se if SV is Regulator 7V of output needed compliance 77 1338 nya Power supply GND signals ap Eg elr alti 7 is connected directly H iar GND GND tochassis Me renne Se Es pa ci A ae at TA ku fr NE ed compliance Amplifier inputs All amplifier channels of the X PRO series are using pseudo balancing to reject noise on cables etc Pseudo means that there is an input and a separate ground return for each channel The ground return named SGND on Figure 1 must be connected to the small signal ground on the signal processing board GND on above figure A proper place is at the DAC output buffer if a DSP is used Some of the pins in the ribbon cable is used as shields for the inputs These pins must be connected to the general ground of the processing board E G directly to the ground plane Power supply When using the 7V output for DSPs etc it is important to know that this voltage can drop down to approximately 6 1V in standby mode when loaded with 1A it does drop less with lower output currents It is therefore necessary to use a low drop out regulator if a stable 5V supply is needed The LM1117 regulator is a good choice for currents under 500mA since it has a drop of around 1 2V For hi
3. ST700 pin 12 PX PRO ST700 pin 13 PX PRO ST700 pin 14 PX PRO ST700 pin 15 PX PRO ST700 pin 16 PX PRO ST700 pin 17 PX PRO ST700 pin 20 PX PRO ST700 pin 21 PX PRO ST700 pin 22 PX PRO ST700 pin 24 PX PRO ST700 pin 26 PX PRO ST700 pin 27 PX PRO ST700 pin 28 PX PRO ST700 pin 29 PX PRO ST700 pin 30 Designers Manual for Series X PRO amplifier modules Version 1 6 Note Maximum current 150 mA Maximum current 150 mA See I O board diagram for all pins Should be connected to ground at DSP board See I O board diagram for all pins To be connected to signal source ground To be connected to signal source ground To be connected to signal source ground 4 V peak equals full output voltage 32dB gain 4 V peak equals full output voltage 26dB gain 4 V peak equals full output voltage 26dB gain 10 V peak corresponding to 160 V on output 10 V peak corresponding to 80 V on output 10 V peak corresponding to 80 V on output 10 V peak corresponding to 30 A on output 10 V peak corresponding to 20 A on output 10 V peak corresponding to 20 A on output 0 10 V corresponds to 0 100 Degrees Celsius Open collector output Open collector output Open collector output Indicates amp channels switched off either by DSP disable or by protection Active low Switches all amp channels off Active Low Active low Active low Disables soft volume reduction at high temperatures
4. AC GENERATOR LOAD 4 8 16 Ohms The Audio Precision analyzer setup below is recommended Please see the graph next page for reference Normal 1 00000 kHz Le Fast fr High Acc M Auto On T Track M Invert cua Outputsee cue Invert 1 000 ms Amplitude 0 000 Yims EQ Curve Configuration lt Bos Em 2 Dut Ohma Bal Float F 40 1500 500 References dBm 500 0 Ohms Freq 1 00000 kHz der 287 3 ni watts 4 000 Ohms R Analog Analyzer 10 x DC Channel A Channel B DC 1001 XLR Bal 1001 Genton CS OR Error GES D IY Auto Range M Phase EE Auto Le Function Reading B d Amplitude ER M Auto Range Detf uto RMs BF BR Fltr Freg Byrf lt 10 Hz JIE FOO kHz Sweep Track Fltr Mone References Freq fi 00000 kHz der 4 387 3 n watts 4 000 Ohms der B 387 3 ry dBm 600 0 Ohms To start the measurement press Go in the Sweep panel Designers Manual for Series X PRO amplifier modules Version 1 6 LESTE Cl Sweep M x Data 1 M E Top 30 000 dB g D Sutoscale Bottom 20 000 dEg C Logi Lin Divs 10 T Auto Limits Data 2 None E Top 2 500 ki Autoscale Bottom 100 0 ru NE Logt Lin Divs 5 I Auta ei Source ifGenFreq El Stop 20 0000 Hz x Dra utg Steps Multiply 843 375 m Table Sweep Repeat Stereo Sweep z M Append I
5. Active Low Shuts down all circuitry except 7Vpowered Active Low Page 15 42 Feature description Below a list of features can be seen Amplifier channels feature description Feature Pin No Note Signal Shield 1 Should be connected to analog GND at Input DSP board Signal return Channel 1 2 To be connected to signal source ground Signal input channel 1 3 4 V peak equals full output voltage 32dB gain Signal Shield 4 should also be connected to GND at DSP board Signal return Channel 2 5 To be connected to signal source ground Signal input channel 2 6 4 V peak equals full output voltage 26dB gain Signal Shield 7 should also be connected to GND at DSP board Signal return Channel 3 8 To be connected to signal source ground Signal input channel 3 9 4 V peak equals full output voltage 26dB gain Signal Shield 10 should also be connected to GND at DSP board V Out monitor channel 1 11 10 V peak corresponding to 160 V on output V Out monitor channel 2 12 10 V peak corresponding to 80 V on output V Out monitor channel 3 13 10 V peak corresponding to 80 V on output I Out monitor channel 1 14 10 V peak corresponding to 30 A on output I Out monitor channel 2 15 10 V peak corresponding to 20 A on output I Out monitor channel 3 16 10 V peak corresponding to 20 A on output Temp monitor 17 0 10 V corresponds to 0 100 Degrees Celsius GND ref 15 V 18 GND ref 15 V 19 Clip Out channel 1 20 Open collector output active low
6. Concept B Traditional construction with closed wooden enclosure in the cabinet but where holes in the frontplate secures convection cooling on the backside Convection cooling on the backside of the construction increases the heatsinking surface significantly thereby providing the possibility of reducing the heatsink on the front of the construction p l Concept D Fan cooling can be used in situation where all channels are loaded hard and power at low crestfactors are desirable Alternatively fan cooling can be utilized in designs comprising a flat frontplate or with a high Rth in general Note 1 It is important for the reliability of the product to use an air filter where the fan pulls air into the construction Note 2 It is important for the reliability of the fan that the design is made in a way where the fan is pulling cold air into the construction If the fan is pushing hot air out of the construction the bearings in the fan will have a reduced lifetime Page 26 42 General thermal considerations Please note that a Class D amplifier has an advantage in driving reactive loads such as a real loudspeaker drivers From the heatsink power dissipation X PRO1 table a massive drop in powerloss can be seen between resistive 4 Ohm loading and real speaker loading This is due to the fact that the impedance curve for an LF driver in a cabinet has several impedance peaks where the voltage from the amplifier only ge
7. This Zobel network is a series connection of a resistor and a capacitor The X PRO series design doesn t comprise a Zobel network Even so HF signals for longer periods of time on the output might overload the filter components This is never a problem when reproducing music signals but might be a problem if applying constant HF signals on the input from E G a signal generator Therefore a high frequency protection algorithm has been implemented to protect the amplifier from excessive HF signals on the the amplifier output 30kHz full power is allowed for 2 seconds before protection becomes active 20 kHz will be allowed for unlimited time High frequency protection of the amplifier output can be seen from the voltage output of the amplifier channel 2 or 3 in the below screen dump Testcondition Load Unloaded Vinpeak 9V 30kHz Designers Manual for Series X PRO amplifier modules Page 20 42 Version 1 6 RMS power limitation When connecting several amplifiers to the mains it is important to secure that there are limits to how much power can be drawn from each unit in order to protect the mains fuse In order to know the maximum power draw from the mains an RMS power limiter has been implemented in the PSUX PRO The RMS power limit is set to of 2000V ong Tem rus It is thereby possible to calculate the maximum summed power consumption from amplifiers being connected to one phase Limiting the number of amplifiers in accordance wi
8. ror Es wu D i I XD N D bs AE D U D WU UOWTTJNOA WWS Z OWS IMUNdise WUWUGZ ONS IMUNDISS SIES ode a WWS Z ONS IMUNdIS WUS N wu WWG N o D MD
9. 2 Dut Ohm Bal Gnd E 40 15060 500 References dem 500 0 Ohms Freq 1 00000 kHz der 387 3 rie watts 4 000 Ohms R Sweep Data po Ch 1 Harm Sum Ratio el Top fio OOO0 P Autoscale sc p 00100 C Logi Lin DIE E Auto Limits R Analog Analyzer Mel DC Channel A Channel 6 ns ons E gt RER f150 0 v T Auto Range I jeno v RE uo Lu ie Function Reading B d MW Auto Range a Det Auto Fa RMs BF BR Flir Freg Eve lt 10 Hz 20 kHz AE d Sweep Track J Fltr References Freq 1 00000 kHz dEr me 387 3 mv Watts 4 000 Ohms dBr B 387 3 mv fl dBm 6000 Ohms Data 3 Distortion Ch 2 Ham Sumi Ratio Data f rre 2 Data 5 None Ei Data g None Bi hen Jani Level E Limits 3 Limits 4 Minis Mine Top B S00 Kw IE a 17 Autoscale Pre Sweep Delay 0 000 sec Analyzer Eee eee de lee EG Chi Input Hikes A D 265535 F Ch2 E SOUrce fane v TE EET MEE Sum 1 Ratio Units f HiAccurac Sweep Trac fi OO000 kHz Digital References TT iuar der 1 100 0 mFFS Freq 1 00000 kHz der 2 100 0 mFFS gt ves 1 000 y Bie E Bottom 100 0 nn ETS Logt Lin ey M Create Table Dive G E Une UK Data On x Create Graph Source 1 Gen Ampl Source 2 None El Start 2 200 rms LE Log Lin C Logi Lin Start C Logt Lin Stopi 1 000 vims Diw E F Auto Stan 0 00000 F Steps FM Repeat
10. Clip Out channel 2 21 Open collector output active low Clip Out channel 3 22 Open collector output active low GND ref 15 V 23 Dis read Protect 24 Indicates amp Channels switched off either by DSP disable or by protection Active low Open collector output GND ref 15 V 25 Disable 26 Switches all amp channels off Active Low Clip Limit off all channels 27 Active low SMPS Limit 28 Open collector active low Temp reduction off 29 Disables soft volume reduction at high temperatures Active Low Standby 30 Shuts all power circuitry except 8 V Active Low 7 V 31 Maximum current 1 0 A available in standby mode 7 V 32 Maximum current 1 0 A available in standby mode GND ref 15 V 33 GND ref 15 V 34 15 V 95 Maximum current 150 mA total on 15V 15 V 36 Maximum current 150 mA total on 15V GND ref 15 V 37 GND ref 15 V 38 45V 39 Maximum current 150 mA total on 15V 15V 40 Maximum current 150 mA total on 15V Note 1 The above auxiliary power ratings are given for a X PRO3 module The 15V supply on the X PRO2 module can deliver 50mA more on each supply rail The 15V supply on the X PRO1 module can deliver 100mA more on each supply rail Designers Manual for Series X PRO amplifier modules Version 1 6 Page 16 42 Note 2 All control inputs named active low are pulled up internally To avoid voltage mismatch of the internal micro processor and external processors it is recommended t
11. Stereo Sweep Tj f t tepl 14 000 M Append M Single Point Se TE To start the measurement press Go in the Sweep panel Input voltage is set in the Start section of the sweep panel For maximum output the input voltage should be in the range of 2 55 Vrms to reach maximum power output Designers Manual for Series X PRO amplifier modules Page 6 42 Version 1 6 How to verify the peak voltage performance Measured peak voltage 1000Hz 1 cycle per channel on low impedance 230V mains Load 16Q 80 40 Unloaded Channel 1 driven 160V 120V 165V Channel 2 or 3 driven 80V 75V 83V Channel 1 2 driven 155V 78V 120V 70V 165V 83V Channel 1 2 3 driven 150V 75V 75V 115V 72V 72V p 165V 83V 83V The peak voltage performance measurement is measured with the AP SYS 2722 at the appropriate load AC GENERATOR See illustration below INPBTA OUTPU OUTPUT B Gy AUX 0025 fei OUTPUT A OUTPUT B OO OO ze eT a ty One Eg B av i LOAD 4 8 16 Ohms Je INF T A INPUT B 0 SYS 2722 The setup below has been used on the Audio Precision analyzer to create the 1000 Hz 1 cycle burst To obtain a properly clipped output signal on the amplifier unit adjust the input voltage in the Analogue Generator to 5 Vp for Ch1 Ch2 and Ch3 Please see the graph next page for reference R Analog Generator wfm Sine Normal Burst d F
12. All I O board signal connectors mounted in the chassis must be decoupled to earth chassis via capacitors C as illustrated on the Earthing and internal cabling diagram The capacitors are placed at the signal connector leaving the chassis and as close to the chassis as possible The C capacitors must be COG 220 470pF Please also see appendix 3 for I O board schematics All PCB tracks for EMI decoupling should be kept as wide and short as possible in order to reduce especially the HF impedance The earth terminals on the mains connectors and mains link connectors must be connected directly to the chassis as close to the connector entering leaving the chassis as possible This is partly a safety concern according to the international approval authorities but it is also a very important part of the EMC and EMI earthing design The aluminum heat sink carrying the X PRO series module must be connected directly to the heat sink and to earth via the chassis either by direct connection to chassis or connection through pin4 in ST900 Designers Manual for Series X PRO amplifier modules Page 35 42 Version 1 6 How to make proper chassis shielding On the X PRO series there are powerful RF sources and these should be shielded to limit the RF electromagnetic emission from the PCB The proper way to shield the RF emission is to design a full body metal chassis in either aluminum or steel or alternatively to use the optional shielding cage provided
13. Channel 1 driven Channel 2 driven Channel 3 driven Output Circuitry Output Voltage Signal To Noise Ratio THD N typical Frequency Response Damping Factor Protection Circuits Readouts for DSP Network Power Supply Operation Voltage Power Hibernation Aux Power for DSP Fan Control Power Ratings RMS 1 THD 16 Q 80 40 Peak 800 W 1550W 2000 W 3600 W 200 W 400 W 700 W 1300 W 200 W 400 W 700 W 1300 W Amplifier 3ra Generation Class D full bandwidth PWM modulator with ultra low distortion LF 160 Vp 320 Vpp unloaded MF HF 80 Vp 160 Vpp unloaded LF gt 120 dB MF HF gt 120 dB A weighted 20 Hz 20 kHz 8 Q load lt 0 05 20 Hz 20 kHz 8 Q load 3 dB below rated power 20 Hz 20 kHz 0 15 dB 8 Q load 1 dB below rated power gt 1000 8 Q load 1 kHz and below Input limiter short circuit protection DC protection of output under amp over voltage protection intelligent mains fuse protection power stage overload protection temperature protection of transformers and heat sinks On Hibernation Clip Protect mode Output voltage Output current Heatsink temperature Regulated high efficient Switch Mode Power Supply Universal Mains 85 268V dual voltage auto selection Possibility for remote control start up and shutdown hibernation mode power consumption lt 2W 15 V 150 mA 7V 1 A delivered by standby power supply 5V Controlled by temperature thresholds All specifications are ty
14. In outputs Channel 1 Channel 2 Channel 3 RMS power output 1 7 of rated channel power Mains Input Wrms Amplifier output Wrms 4 Ohm 4 Ohm 557 343 8 Ohm 8 Ohm 530 343 4 Ohm SUB 4 Ohm 383 249 Power In Output X PRO3 X PRO3 model loading X PRO3 Power In outputs Channel 1 Channel 2 Channel 3 RMS power output 1 7 of rated channel power Mains Input Wrms Amplifier output Wrms 4 Ohm 4 Ohm 4 Ohm 429 8 Ohm 8 Ohm 8 Ohm 650 429 4 Ohm SUB 4 Ohm 4 Ohm 525 335 4 Ohm SUB load is a dual 18 driver bandpass subwoofer with a nominal impedance of 4 Ohm Input signal is filtered to 25Hz 200Hz Powers are measured on the output of the amplifier channels with the same RMS voltage level as with 4 Ohm resistive loads Designers Manual for Series X PRO amplifier modules Page 24 42 Version 1 6 Heatsink design In the following table the powerlosses for the X PRO1 X PRO2 and X PRO3 modules are given under different load conditions Heatsink power dissipation X PRO1 X PRO1 model loading Channel 1 Channel 2 Channel 3 RMS Voltage output gt 1 7 of rated channel power 4 Ohm 169W 8 Ohm 145W 97W 4 Ohm SUB n Heatsink power dissipation X PRO2 X PRO2 model loading Channel 1 Channel 2 Channel 3 RMS Voltage output gt 1 7 of rated channel power 4 Ohm 4 Ohm 214W 8 Ohm 8 Ohm 187W 134W 4 Ohm SUB 4 Ohm Heatsink power dissipation X PRO3 X PRO3 model loading Channel 1 Channel 2 Channel 3 R
15. Single Point e Page 9 42 Frequency response example can be seen from the following two measurement graphs Ch1 High power channel measurement can be seen below Amplitude response in upper part of the graph Phase response in the lower part of the graph 30 a E AP 80 29 60 28 27 40 2 26 20 B C d g 25 0 e E g A 24 220 23 40 22 T 60 21 L z E 80 20 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Hz Note Bump on graph in the range 100 200 Hz is due to Audio Precision relays switching Red graph Green graph Cyan graph Open load 8 Ohm load 4 Ohm load Ch2 or Ch3 Medium power channels measurement can be seen below Amplitude response in upper part of the graph Phase response in the lower part of the graph 30r e Ap 80 29 60 28 2 27 40 d 26 20 B a g 25 7 0 A 24 20 23 40 22 60 21 gt 80 20 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Hz Note Bump on graph in the range 100 200 Hz is due to Audio Precision relays switching Red graph Open load Green graph 8 Ohm load Cyan gra
16. by Pascal The following design rules should be observed 1 Connectors for inputs and outputs should be placed as close to each other as possible to minimize the antenna effect of input and output cables to and from the chassis The larger the distance between inputs and outputs the higher the antenna effect 2 Always minimize the amount and size of holes for connectors user interface components and airflow vents in the chassis All holes or slits are in principle openings where RF noise can escape 3 Use as many screws as possible to assemble the chassis parts Shorter distance between the screw holes means shorter slits The length of these slits between the screws define the wavelength of RF noise which can escape the chassis 4 Always ensure a good electric coupling between the chassis parts to ensure that the RF noise is shielded the chassis How to make correct internal cabling The internal cabling inside the product constitutes potential paths where RF noise can be distributed between the different modules The following design rules must be observed 1 Always ensure that your cables are adequately immune to RF noise being induced into the cable Use shielded or twisted cables whenever it is possible See the illustration below 2 Do not place cables close to RF noise sources The components marked with green on the Earthing and internal cabling diagram shows areas where the RF noise fields are strong and where cable
17. equipment Council Directive 73 23 EEC This product conforms to the following standards EN60065 Safety EN55103 1 Emission EN55103 2 Immunity The operating conditions and application environments presupposed in the information for use user manual are to be kept accordingly If the product is approved according to EN55103 1 Class A ITE limits the following text should be included in the user manual WARNING This is a class A product In a domestic environment this product may cause radio interferences in which case the user may be required to take adequate measures If the product is approved according to EN55103 1 Class B ITE limits the above text should not necessarily be included in the user manual Mains connection information Example of mains connection sticker Must state Max power consumption above 1kW in order to comply to EN61000 3 2 2001 Limits for harmonic current emissions Equipment input current less than or equal to 16A per phase Designers Manual for Series X PRO amplifier modules Page 37 42 Version 1 6 Appendix 1 1 Cable production documentation Amp Out Cable specification Amount Part No Manufacturer Description 1 42021 2A Molex Plug Housing A a 2 42024 Molex Connector pin female 5 of 2 5 L 1 Red Klasing Kabel Flexible cable 14 AWG of 35 Cu UL Style 1015 VW 1 Oo 105 C 600 V E111235 5 1 Bl
18. pre approved as a modular system according to UL6500 EN60065 In order to obtain the advantages that this pre approval will provide during the safety approval of the end product it must be insured that the end product complies to the design specifications given in the following sections Earthing Please observe that the electronics on the X PRO series is designed to meet the requirements for Class 1 products Please see section Earthing and internal cabling diagram for further information All mains input Earth connections shown in the diagram below must be made with M4 screws It must be secured during the manufacturing process of the end product that Earth connections are connected internally lt is dangerous and illegal for the the end user to remove the earth connection of the end product Safety distances The following minimum safety distances should be kept internally in the end product End product Safety minimum Distances From Part Net directly connected to To Part Net directly connected to Path Minimum Distance Earth Chassis Primary side Air 3 5mm Earth Chassis Primary side Creepage 3 5mm Primary side Secondary side Air 7mm Primary side Secondary side Creepage 7mm On the X PRO series module all creepage safety distances are kept on the PCB from the PCB edge to any component or net on the PCB Therefore only cables and surrounding backplate mechanics should keep the indicated air path distances to the above specified nets
19. use this product near water for example in damp rooms or near a swimming pool e Clean only with dry cloth Do not cover the heat sink Install in accordance with the user manual Do not install near any heat sources such as radiators heat registers stoves or other apparatus that produce heat e Protect the power cord from being walked on pinched or damaged in any other way Pay particular attention to plugs and the point where they exit from the Amplifier Unit e The product may only be used in accordance with the information provided in the user manual Before and during the usage of the amplifier please ensure that all recommendations especially the safety recommendations as detailed in the user manual are adhered to The Amplifier Unit is designed for the amplification of pulsed audio signals and the Amplifier Unit should only be connected to speakers with an average impedance that is not lower than the impedances specified in the User s Manual e Do not place the product on an unstable cart stand tripod bracket or table The device may fall causing serious injury and serious damage to the device itself e The Amplifier Unit can only be disconnected from the power supply by removing the plug which must be freely accessible at all times Unplug this Amplifier Unit during lightning storms or when unused for long periods of time e Refer all servicing to qualified service personnel Damages that require service Unplug the A
20. 00 for mains power connection Please note that Live L and Neutral N is connected to the module through ST900 The Earth connection can be connected in ST900 Pin 4 or directly to the chassis close to ST900 on an M4 stud screw The ST900 connector type for the mains input cable is described in the cable production documentation in Appendix 1 Designers Manual for Series X PRO amplifier modules Page 14 42 Version 1 6 Pin designations Below the pin designations can be seen Feature 15 V 15 V GND ref 15 V Signal shield 7 V Signal return Channel 1 Signal return Channel 2 Signal return Channel 3 Signal input channel 1 Signal input channel 2 Signal input channel 3 V Out monitor channel 1 V Out monitor channel 2 V Out monitor channel 3 Out monitor channel 1 Out monitor channel 2 Out monitor channel 3 Temp monitor Clip Out channel 1 Clip Out channel 2 Clip Out channel 3 Dis read Protect Disable Clip Limit off all channels SMPS Limit Temp reduction off Standby Amplifier Auxiliary power and main SMPS control Circuit board connector and pin no PX PRO ST700 pin 35 36 PX PRO ST700 pin 39 40 PX PRO ST700 pin 18 19 23 25 33 34 37 38 PX PRO ST700 pin 1 4 7 10 PX PRO ST700 pin 31 32 PX PRO ST700 pin2 PX PRO ST700 pin 5 PX PRO ST700 pin 8 PX PRO ST700 pin 3 PX PRO ST700 pin 6 PX PRO ST700 pin 9 PX PRO ST700 pin 11 PX PRO
21. 000 Vims I Auto On F Invert cua Outputs Gr 100 0 mime Amplitude EQ Curve Post EG M Auto Range Det Auto RMs BF BR Fitr Freq Byrf lt 10 Hz 20 kHz AE a Sweep Track a Configuration Bal Gnd Fltr References Qut Ohms E 40 150 500 References dem 500 0 Ohms Freq 1 00000 kHz der 387 3 mv watts 4 000 Ohms der 287 2 ry watts 4 000 Ohms der B 387 3 rn dem 600 0 Ohms To start the measurement press Go in the Sweep panel Freg i OO000 kHz Designers Manual for Series X PRO amplifier modules Version 1 6 R Sweep J5Jx Data 1 ni THO N Aatio Top 1 00000 IP Autoscale Battacr p 00100 Log Lin Divs Le P Auto Limits Be Right 2500 kw x PF Autoscale fe Suto Limits Source 1 GenAmplA Bi Stop 5 000 Vims e TER Auta Steps 50 Multiply fi 11676 Repeat Stereo Sweep M Append I Single Point Table Sweep Go Page 11 42 Distortion THD N performance measurement Both of the following graphs are measured with an 8 Ohm load Below a THD n 8Ohms measurement on CH 1 can be seen 10 Ap 2 1 0 5 0 2 0 1 0 05 0 02 0 01 0 005 0 002
22. Designers Manual for X PRO Series amplifier modules N VIT LU p e pr on z 1 Jo N 2 I vil ye ps wh D z som _ et tr s ae A L WO Ge ro ve N jA d ATTENTION Safety instructions inside Read this Manual before starting Design process Designers Manual for Series X PRO amplifier modules Version 1 6 Page 1 42 Contents Ol JUL 5 ERE EEE EEE 18 EE EE EN IE ENE 18 Chassis CONNECTION seen serrer e eee e nee eee nee eee eee enene een eeeeenese 18 General features A EE EE EEE AEE ET T 19 Thermol manageme on er eee ne ee Ee ener rr eer re reer rere errr er 24 EE L RE ecco tian cnesececewcas 25 General thermal considerations ararnnvavnvnvnnunvavnvnnnnnnvnvnvnvunvavnvannnnnvnnvnnvavvavnnvnnvanvavnnvnn 27 Fe ed OR OR Gi Rene 27 Designers Manual for Series X PRO amplifier modules Page 2 42 Version 1 6 Appendix 1 2 Cable production documentation Mains In Appendix 1 3 Cable production documentation 40Pole I O A enix L Cable production documentation Fan Output Designers Manual for Series X PRO amplifier modules Version 1 6 Page 3 42 X PRO series specifications Mechanical drawings of the X PRO series mechanical profiles can be found on the Pascal Extranet www pascal audio com extranet From below stated table electrical specifications on the X PRO series are given Load
23. Earth connection internally in End product If the Earth connection is not made through connector ST900 but directly from the mains connection onto the chassis the connection must be marked by an Earth symbol internally in the product E G as shown on the picture below IMPORTANT The Mains connection must be verified as having low impedance during manufacturing process of the end product Earth wire from Powercon mains input should be mounted with M4 screws bolts Additional earth connections from Mains link should have it s own M4 connection point to the chassis Alternatively the same mechanical connection point can be used but each earth connection wires should be mounted with separate nuts on a stud Safety temperatures Safety authorities might test temperature in the amplifier construction to secure that the temperature does not exceed safe limits this might include all magnetic components like the transformers In general all materials used externally to the amplifier are investigated for UL94 VO compliance or to see if temperature on materials are within safe limits Designers Manual for Series X PRO amplifier modules Page 30 42 Version 1 6 Product displayed safety instructions The purpose of this section is to list all important safety instructions precautions markings and symbols which must be entered into the User s Manual for the final self powered loudspeaker product to obtain the international approvals Sa
24. MS Voltage output gt 1 7 of rated channel power 4 Ohm 4 Ohm 4 Ohm 241W 8 Ohm 8 Ohm 8 Ohm 211W 4 Ohm SUB 4 Ohm 4 Ohm 190W The following heatsink power dissipation numbers can be used to estimate a thermal resistance Rth in Kelvin Watt K W of the complete front and backside of the amplifier construction Temperature INCreaSE Heatsink Rin POW E Riaissipation in heatsink Designers Manual for Series X PRO amplifier modules Page 25 42 Version 1 6 Different mechanical solutions can be used in order to reduce the amount of visible heatsink on the amplifier construction Below are suggestions on how to reduce visible heatsink AL nn MUNN Concept A Traditional construction with closed wooden enclosure in the cabinet This solution requires a large heatsink as only the front of the construction is used as heatsinking NUNN Concept C The closed wooden enclosure is removed This provides forced cooling of the backside of the construction as LF drivers creates airflow internally in the box or through the cabinet port thus removing the heat from the construction In order to obtain sufficient cooling an EMI cage or shielding box must be made of thermally conductive material like aluminum to carry heat from the front plate to the back of the shielding box or alternatively have holes to create ventilation around the amplifier module Designers Manual for Series X PRO amplifier modules Version 1 6 UN
25. a voltage clip circuit Voltage clipping of the output voltage can be seen from the below screen dump in Channel 1 Testcondition Load 80hm Vin 10V e fi z is lar Pad 7 he ig B B En BETTE Thal SN ATT AE A CT Ps TT Current clipping When the amplifier reaches output current levels close to the maximum allowed current levels a current clipper circuit will be activated limiting the current on the output of the amplifier Current clipping can be seen from the below screen dump as a clipping of the output current and voltage Testcondition Load 40hm Vin 8V For channel 2 or 3 the following current clipping can be seen Neue NET NT a TATT TN TEN GN Designers Manual for Series X PRO amplifier modules Version 1 6 pp opt EE RARE T7 A me Page 19 42 For channel 1 the following current clipping can be seen Hard short circuiting In case of a hard short circuit between amplifier output terminals the amplifier latches for a short period of time to protect the amplifier powerstage as the current clipper circuit is not fast enough to react in hard short circuit situations It can NOT be insured that a short to ground or Earth from one output terminal of channel 1 will not cause damage to the amplifier powerstage High frequency protection Most Class D amplifier designs comprises a small output filter damping network called a Zobel network
26. components Please note that the back chassis mechanics should also have a safety distance of 3 5mm to any of the components on the PCB as described above This should also be the case when a force of 2 Newton is applied to the mechanics The 3 5 mm distance should also be kept during operation where the end product is vibrated IMPORTANT Please note that cables should not be wired in the primary side areas as safety barrier will be compromised It must be secured that cables are internally wired and mounted so that they will not compromise any safety distance internally in the end product Designers Manual for Series X PRO amplifier modules Page 28 42 Version 1 6 Earthing and internal cabling diagram I O BOARD A pe AAS y Ja f PO ba i X 4 P d 4 p f 1 maskin r it f Lc Designers Manual for Series X PRO amplifier modules Page 29 42 Version 1 6 As seen from the figure above all in and outputs of the amplifier should be decoupled to chassis The output of the amplifiers can be decoupled to chassis by making a small output PCB carrying connectors and decoupling capacitors as well as studs for the mounting to chassis Such a small decoupling PCB can be seen as top and bottom side view from the below figures Marking of mains
27. female 1 Brown Klasing Kabel Flexible cable 14 AWG Cu UL Style 1015 VW 1 105 C 600 V E111235 1 Blue Klasing Kabel Flexible cable 14 AWG Cu UL Style 1015 VW 1 105 C 600 V E111235 1 Yellow Green Klasing Kabel Flexible cable 14 AWG Cu UL Style 1015 VW 1 105 C 600 V E111235 1 Alternative Cables Avro Kabel E194781 Medi Kabel E223795 4 for A211 Brown Live Blue Neutral Yellow Green Earth Drawing The copying distribution JHF 05 03 09 P ASC A and utilization of this document as well the Edited communication of its Version Date Author contents to others without expressed authorisation is prohibited Offenders will 2 be held liable for the Short description Mains cable Project A211 Designers Manual for Series X PRO amplifier modules Version 1 6 payment of damages All rights reserved in the event 7 Work Order no Page of the grant of a patent 05 03 09 A211 1 utility model or ornamental Specification reference design registration Page 39 42 Appendix 1 3 Cable production documentation 40Pole I O Cable specification Type Distance between Greencon No Alternate Strain relief Locking levers connectors connector fr x A GPHA220 2002B02A yes yes Flat ribbon cable 40 pole 28 AWG UL Style 2651 300 V 105 C Xx mm Stranded wire i Manufacturer Greencon Number of p
28. fety markings on the product front plate Amplifier output connectors which can be accessed by the end user from the front panel are marked with a lightning flash with arrow head symbol to indicate high voltage terminals Powering external boxes by having Speakon outputs for external cables increases the Antenna effect of the complete amplifier This means that the cables internally must be decoupled to the chassis in order for the product to comply to the EMI standards Please observe section EMC and EMI design recommendations for correct decoupling of outputs Example of warnings against hazardous actions or hazardous use are stated on the front panel CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR Designers Manual for Series X PRO amplifier modules Page 31 42 Version 1 6 Safety instructions for admittance in the product s User s Manual e Read the information for use user manual e Please keep this user manual in a safe place during the lifetime of the product The user manual forms an integral part of the product Reselling of the product is only possible if the user manual is available Any changes made to the product have to be documented in writing and passed on to the buyer in the event of resale e Heed all warnings e Follow all instructions e Do not
29. from the mains power supply can only be achieved by removing the plug from the mains socket and by external disconnection of all poles from the mains Interference of external objects and or liquids with the appliance Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock Never spill liquid of any kind on the amplifier Accessories Do not place this product on an unstable cart stand tripod bracket or table The product may fall causing serious injury and serious damage to the product Any mounting of the product should follow the manufacturers instructions and should use a mounting accessory recommended by the manufacturer Connecting When you connect the Amplifier Unit to other equipment turn off the power and unplug all of the equipment from the supply source Failure to do so may cause an electric shock and serious personal injury Read the user s manual of the other equipment carefully and follow the instructions when making the connections Sound Volume Reduce the volume to minimum before you turn on the amplifier to prevent sudden high levels of noise which may cause hearing or speaker damage SPEAKON connectors WARNING SPEAKON connectors marked with the lightning flashes indicate high voltages that are potentially life threatening Wiring to these terminals requires installation by an instructed person and t
30. gher currents a lower drop is required E G LP38690 has a drop of 0 45V at 1A Chassis connection The ground of the power supply inside the X PRO series module is connected directly to the chassis witha low impedance connection for best EMI ESD performance Therefore we recommend using the grounding scheme of above figure The ground from the ribbon cable is used for all parts on the processing board of cause the designer shall split this GND properly between analog and digital parts around DACs DSPs etc as required We also recommend connecting all shields of cables directly to the chassis for best EMI performance fx pin 1 of the input XLR connectors All wires coming in and out of the box must be decoupled to the chassis with a small capacitor It is normally a good idea to make a plane on the processing board connected directly to chassis ground via XLR screws and housing to get a low impedance high frequency connection It is also a good idea to make a small PCB for filtering the loudspeaker outputs directly when they exit the box This PCB shall hold small capacitors from all wires to the chassis Again it is required to make a good high frequency connection from this PCB to the chassis Designers Manual for Series X PRO amplifier modules Page 18 42 Version 1 6 General features Voltage clipping When the amplifier reaches output voltages close to the powerstage rail voltages the output voltage of the amplifier is limited by
31. he specified power rating Always use ready made mains link cables with original POWERCON connectors DO NOT REMOVE MAINS CONNECTOR GROUND IT IS ILLEGAL AND DANGEROUS Example of mains connection sticker Must state Max power consumption above 1kW and class 1 wiring Designers Manual for Series X PRO amplifier modules Page 34 42 Version 1 6 EMC and EMI design recommendations When designing with class D amplifiers and switch mode power supplies proper design precautions must be taken to decouple and shield all RF noise sources adequately Here are the 3 most important ways to a good EMC and EMI design How to make proper earth decoupling designs It is important to decouple all potential internal RF noise sources directly to earth via decoupling capacitors as close to the source as possible All cables leaving the chassis will act like antennas and radiate RF noise from internal sources to the surroundings externally to the chassis Therefore it is important to place decoupling capacitors where cable connections enter or leave the chassis and thereby decouple the source to the chassis The loudspeaker output connection terminals must be decoupled to earth via the capacitors C as illustrated on the section Earthing and internal cabling diagram The capacitors are placed at the loudspeaker signal connector leaving the chassis and as close to the chassis as possible The C2 capacitors must be ceramic X7R COG material 100nF 100V
32. he use of ready made leads or cords Designers Manual for Series X PRO amplifier modules Page 33 42 Version 1 6 Custom wiring should only be carried out by qualified personnel To prevent electric shock do not operate the product with any of the conductor portion of the speaker wire exposed NOTE For reasons of safety and performance use only high quality fully insulated speaker cables of stranded copper wire Use the largest wire size that is economically and physically practical and make sure the cables are no longer than necessary Precautions when connecting to MAINS IN and MAINS LINK When mounting or connecting the product always disconnect it from mains Only connect the product to an appropriate AC circuit and outlet according to the requirements indicated on the rating plate If a power cut occurs while the amplifier is switched on it will restart automatically once the power supply has been restored All settings prior to the loss of power will be maintained IMPORTANT Always connect the Product to mains through the MAINS IN connector on the Amplifier Unit IMPORTANT Always use ready made mains cables with original POWERCON connectors when connecting the product to mains IMPORTANT When disconnecting the Product from the mains always disconnect at the mains end first before disconnecting the powerCon connector at the Product end IMPORTANT Only connect additional Products to the MAINS LINK connector keeping within t
33. igners Manual for Series X PRO amplifier modules Page 21 42 Version 1 6 Testcondition Load Open load Vin peak 5V 1kHz 1 5 0 V The above figure shows a slight attenuation or Rounding of the clipped tops of the Sinusoidal waves Temperature limiting In the event where the amplifier does not have sufficient cooling and the amplifier powerstages are reaching temperatures above 89 degrees or the mains transformer in the SMPS reaches temperatures above 95 degrees the limiters will be constantly activated thereby limiting the output voltage level In this way the RMS power level is reduced to an equilibrium between power output and temperatures Temp reduction off The temperature reduction as described in the previous section can be disabled By pulling down pin 29 the thermal limiting is disabled and the amplifier will shut down at approximately 94 degrees if the amplifier doesn t reach it s equilibrium between power and temperature Designers Manual for Series X PRO amplifier modules Page 22 42 Version 1 6 Powerstage protection on Channel 1 Due to the high power level channel 1 has a powerstage protection which protects the powerstage from overloading by rapidly reducing the voltage on the output of the amplifier channel The protection level is dependant on the output signal frequency load impedance and temperature A signal output WITHOUT power stage protection can be seen from below Output signal freque
34. ion 1 6 Data Ft Ch Ampl is Top 160 0 Y Autoscale Boomi isoo Vw eae rl Dvs IV Auto Limits Data 2 None et Top 1 500 FFS Autoscale Battorn 1 500 FFS pa logii Fft FFT Time Source 1 a ae aa Auto Steps 511 Spectrum base ft 957 usec v I Go Page 7 42 To view the peak voltage measurement results open the Data Editor in the Audio Precision audio analyzer Press Menu and Panels to enter the Data Editor 3 J andin Deecicinn 4 ne ine 09 20 27 R Audio Precision 04 06 06 06 36 35 _ o X Do En a n The output voltage measurement results can be viewed at 300 usec and 800 usec respectively in the Data Editor The above figure can also be obtained or viewed on an oscilloscope Always use differential probes when connecting the oscilloscope to the amplifier output Differential probes must be able to handle 190 V minimum Designers Manual for Series X PRO amplifier modules Page 8 42 Version 1 6 How to verify the frequency response Frequency responses are normally measured in 4 Ohms 8 Ohms and open load using the Audio Precision SYS 2722 Use S AES17 filter the AUX 0025 filter and connect the appropriate load See illustration below OUTPUT A OUTPUT B SYS 2722 INPUT A INPUT B e O O Q O OO OO a
35. mately 89 C on the amplifier power stages The recommended maximum ambient temperature inside the Amplifier Unit chassis is 60 C lower temperatures will relieve stress on components on the PCB The recommended ambient temperature range outside the chassis at the heat sink is 10 C 55 C IMPORTANT For optimal thermal performance the X PRO module must be mounted directly onto the heat sink using an adequate amount of thermal joint compound Fan control A fan control has been implemented in the X PRO series module in order to be able to use a fan in designs where the heat sinking is limited The fan control output can be found on connector ST702 Please see section General electrical design information and has the following pin configuration Pin 1 GND Pin 2 5V Controlled according to the following thresholds The thermal thresholds for the fan control are the following Fan control Thermal threshold Temperature ON Degrees Celcius Temperature OFF Degrees Celcius Powerstage 65 50 Electronics ambient temperature 50 40 Note If a larger fan is required the controlled 5V signal on pin 2 in ST 702 can be used as a control signal for a 230V fan Adding a fan to the 15V supply will increase the noise levels on the amplifier outputs which is why it is not recommended Designers Manual for Series X PRO amplifier modules Page 27 42 Version 1 6 How to comply to safety requirements The X PRO series has been
36. mplifier Unit from the mains supply and refer to your dealer distributor or other authorised repair workshop Servicing is required when 1 The power supply cord or plug has been damaged 2 Liquid has been spilled or objects have fallen into the amplifier 3 The amplifier has been exposed to rain or moisture 4 The amplifier has been dropped or suffered damage in any other way 5 The amplifier exhibits a distinct change from its normal function or performance Servicing Do not attempt to service this product yourself As opening or removing covers may expose you to dangerous voltage or other hazards the amplifier may only be opened by qualified personnel Please refer to your dealer distributor Servicing and Replacement Parts All service and repair work must be carried out by an authorised dealer distributor When replacement parts are required please ensure that the dealer distributor only uses replacement parts specified by the manufacturer The use of unauthorized replacement parts may result in injury and or damage through fire or electric shock or other electricity related hazards Designers Manual for Series X PRO amplifier modules Page 32 42 Version 1 6 Safety Check Upon completion of any service or repairs to this product ask the dealer distributor to perform safety checks to determine that the amplifier is in proper operating condition Read the information for use user manual When shipping the product always use the o
37. nce RMS 1 THD 1kHz per channel on 230 Vac mains generator Load 16 Q 8 Q 4 Q Peak Channel 1 driven 800W 1550W 2000 W 3600 W Channel 2 driven 200 W 400 W 700 W 1300 W Channel 3 driven 200 W 400 W 700 W 1300 W Measured power performance RMS 1 THD 1kHz per channel on 120 Vac mains generator Load 16 Q 80 4 Q Peak Channel 1 driven 800W 1500W 2000 W 3600 W Channel 2 driven 200 W 400 W 700 W 1300 W Channel 3 driven 200 W 400 W 700 W 1300 W The power performance measurement is measured with the AP SYS 2722 Use S AES17 filter the AUX 0025 filter and connect the appropriate load See illustration below AC GENERATOR LOAD 4 8 16 Ohms k c IE i fy LT oil ep av Le dr AL DEVICE UNDER TEST SG ARE o lt lt OUTPUTA OUTPUT B SYS 2722 I Ve en 1 DO XI CNG Designers Manual for Series X PRO amplifier modules Page 5 42 Version 1 6 The setups below have been used on the Audio Precision analyzer to create amplifier input burst signals The power performance results are viewed in the Data Editor in the Audio Precision analyzer To open the Data Editor please press Menu and open the Panels section R Anandi Generator Mih gt Normal Frequenc 1 0000 kHz 0 Fast High Acc W Track Inver cha Outputs Gm cue Invert Amplitude EG Curve SPES nelle Configuration
38. ncy 50Hz Load 4 Ohm Resistive Temperature 50 Degrees MA ROG erence A LA A COLE T STUE pt pp te a a S As seen from above screen dump the amplifier is not in protection A signal output WITH power stage protection can be seen from below Observe tops of signals on 1 and 3 Output signal frequency 50Hz Load 4 Ohm Resistive Temperature 55 Degrees Clip limiter LE OE SAR LA v SANN heal IT TT CHAT 20 ve TA AE ALV TL Fy TE As seen from above screen dump the amplifier is in protection The protection will typically not be engaged when the amplifier channel 1 is driving an inductive load like a speaker driver This can be tested by measuring if the output voltage is reduced at high temperatures of the X PRO series module Designers Manual for Series X PRO amplifier modules Page 23 42 Version 1 6 Thermal management The following section describes power tests where the amplifiers are loaded with different types of loads and the power inputs and outputs are observed Each channel delivers an RMS voltage output corresponding to full output power at a crestfactor of 7 times Power In Output X PRO1 X PRO1 model loading X PRO1 Power In outputs Channel 1 Channel 2 Channel 3 RMS power output 1 7 of rated channel power Mains Input Wrms Amplifier output Wrms 4 Ohm 426 257 8 Ohm 413 257 4 Ohm SUB 260 163 Power In Output X PRO2 X PRO2 model loading X PRO2 Power
39. nerates a low amount of current and thereby a low amount of power out of the amplifier This means effectively that the required heatsinking depends heavily on the speaker loading It will be overkill to design the heatsink for powerlosses when the amplifier is operating with 4 Ohm resistive loading The most informative test will be to mount the X PRO series module on a heatsink with an Rth ranging from 0 25K W 0 75K W and test the amplifier thermally preferably mounted in the cabinet or externally to the cabinet Please note that forced cooling by E G a fan reduces the Rth of a heatsink by a factor of 2 3 times when the fan blows air through the heatsinking fins If a fan is designed to ventilate the electronics and the backside of the frontplate the heatsinking of the frontplate can be reduced significantly Cooling from LF driver excursion will also reduce the Rth of the heatsink significantly due to the large airflow internally in the cabinet Please note that turning on the clip limiters on the X PRO series module will reduce the thermal stress on the module in situations were the amplifiers are driven into heavy clipping The X PRO series is thermally limited as the limiters will be activated before shutdown if the temperature reduction is enabled Thereby the module will reach it s equilibrium between output power and temperature Laboratory tests have shown that the modules will run with the specified power performance up to approxi
40. o control these inputs with open collector or open drain outputs See figure below 1800 series module 5V Open N u Processor External Control Recommendation for 2 1 systems Sub s and top s Channel 2 and 3 are single ended amplifier designs which can pump back energy on the SMPS Especially at low frequencies this can cause the voltage on the secondary side supply rails to rise When channel 2 and 3 are loaded with top speakers and channel 2 and 3 is used to amplify low frequency signals please take following actions Please invert channel 2 or channel 3 This will cancel out the supply pumping thereby not causing the SMPS to reach overvoltage protection levels Tests can be carried out to verify that overvoltage protection is not engaged by disconnecting the load on channel 1 and driving the tops on channel 2 and 3 only Designers Manual for Series X PRO amplifier modules Page 17 42 Version 1 6 Connecting your signal processing Back plate with metal chassis _ Signal processing board Ribbon cable 1800 series module Output PCB AA XLR 3 Signal Shield OE EE Analog or j Digital PER AMP E ee Chas processing SEND ee Signal Shield G i Tr i Ted 7 7 GND GND GND
41. oles 40 Particularity for A211 Tolerance 5 mm 0 mm The copying distribution Drawing and utilization of this JHF 05 03 09 document as well the communication of its Edited contents to others without Version Date Author expressed authorisation is Korda prohibited Offenders will ve be held liable for the Flat ribbon cable for amplifier module payment of damages All j 5 A211 to I O board Project A211 rights reservedinthe event z of the grant of a patent Work Order no Page utility model or ornamental 05 03 09 A211 1 Pegg seen Specification reference Designers Manual for Series X PRO amplifier modules Page 40 42 Version 1 6 Appendix 1 4 Cable production documentation Fan Output Cable specification Amount Part No Manufacturer Description 1 10 11 2033 Molex Connector 5 O 5 E 7 sj g _ _ a Ke of g z z 3 lt L lt 1 Brown Flexible cable 26 AWG Cu N N Ea 1 Blue Flexible cable 26 AWG Cu Vv 1 1 2 i i Alternative Cables Top view LE T DF GND Molex Pin 1 5V Molex Pin 2 Number of poles 3 Particularity for A211 Reference designators Brown Live Blue Neutral Tolerance 5 mm 0 mm Drawing The copying distribution JHF 05 03 09 PA bam C Al and utilization of this document as well the Edited communication of its Version Date Author contents to others without exp
42. ph 4 Ohm load Designers Manual for Series X PRO amplifier modules Page 10 42 Version 1 6 D How to verify the THD Noise To obtain reliable and correct THD N data it is necessary to use the Audio Precision AUX 0025 switching amplifier measurement filter with the Audio Precision SYS 2722 audio analyzer The filter ensures that no out of band switching residual on the power amplifier output disturbs the distortion and noise spectrum measurement The distortion measurement is performed with the AP SYS 2722 Use S AES17 filter the AUX 0025 filter and connect the appropriate load See illustration below OUTPUT B INPBTA OUTPUTA INPUT B G AUX 0025 O OUTPUT A OUTPUT B OO OO INAUT A Q INPUT B SYS 2722 The Audio Precision analyzer setup below is recommended Set the frequency in the Analogue Generator window to 100 Hz 1 kHz and AC GENERATOR av g LOAD 4 8 16 Ohms 6 67 kHz respectively Set Append in the Sweep panel to view all three graphs in one window Please see the graph next page for reference R Analog Generator Oy x Normal Frequency fe 67000 kHz fe Fast High Acc R Analog Analyzer Mi DC Channel Channel B 1 ouf XLR Bal 1 oot x xLF Bal A RS Es ESS n EEE IY Auto Range M BRhase Lo A Function Reading B mel THD N Ratio ER Track A CHE IT Invert 0
43. pical values Designers Manual for Series X PRO amplifier modules Version 1 6 Page 4 42 How to test and measure IMPORTANT Read this section before connecting the Amplifier Unit to your measurement equipment and your test setup The powerful PWM amplifiers and the 320Vpp voltage swing on the output terminals require special knowledge on how to test and measure to obtain correct data and not to damage the measurement equipment Recommended measurement tools and equipment The following equipment list is recommended Recommended measurement equipment Type Note Audio Precision AP SYS 2722 or System 2 Audio analyzer Audio Precision AP S AES17 AES17 measurement filter option for AP system Audio Precision AP AUX 0025 Switching amplifier measurement filter Load Minimum Ohmic load 4 Ohms 2000W low inductive load Mains Generator Only required for power measurements Measurement data and recommended test setup This section is a quick guide how to verify the 4 most important performance specifications Power performance Peak voltage performance Frequency response Distortion THD N measurement How to verify the power performance To get an optimal picture of the power performance of any kind of power amplifier you need to measure several different parameters under different conditions Below you will find the measured power performance data and the test method used to obtain the given specification Measured power performa
44. requenc 100000 kHz i e ER Acc Burst Onf Cycles Interval 1000 Cycle v Low Level 0 00980 IV Auto On T Track KF Invert eur Outputs cHef Invert 7 000 Yp Amplitude 1 000 Vims R Analog Analyzer al DC Channel Channel B 1 1004 xLR Bal v 1 100 vj xur Bal i EE EE 12 2905 gt K GE 160 0 V v E cdi 160 0 V J La amp A Function Reading C B d mpitude ER IV Auto Range gt Detf utoFa RMS ov BP BR Fit Freq BW lt 10 Hz v 20 kHz AE Sweep Track Y Fit References Freq 1 00000 kHz der A 387 3 mv v Watts BSCR ies dBrB 1387 3 my dBm 600 0 Ohms LE a Configuration Bal Float v Z Dut Ohms 40 1500 600 References dBm 600 0 Ohms Freq 1 00000 kHz dBr 397 3 mv v Watts RUE ie R Digital Analyzer Mi X Analyzer spectrum analyzer fft Ch1 Input HiRes A D 65536 Ch 2 Anlr v Source anis v GE gt vo EE D FFT 256 v Acquire Track FFT Window Equiripple x Sub 1 2 pk pl x AvgsfPower spectrum ony lt Wave Display ero p Smoothing joes aos FFT Start Time fo 000 sec Trigger Delay 0 000 sec v Source Analog Gen v Slope Pos Neg Digital References der 1 100 0 mFFS v Freq 1 00000 kHz v dBr2 1100 0 mFFS W FS 11 000 To start the measurement press Go in the Sweep panel Designers Manual for Series X PRO amplifier modules Vers
45. ressed authorisation is prohibited Offenders will be held liable for the Short description Fan cable Project A211 payment of damages All rights reserved inthe event 7 Work Order no Page of the grant of a patent 05 03 09 A211 1 utility model or ornamental Specification reference design registration Designers Manual for Series X PRO amplifier modules Page 41 42 Version 1 6 Appendix 2 Suggested I O board schematics Designers Manual for Series X PRO amplifier modules Page 42 42 Version 1 6 Y x LL r uBlsap 19143 Jo Zie Jo japow 4n4n 1U3JDd DU ou JO JUSAS IDUy pJDOg OI TTIZv eu J0 sJ pu 40 yewuaq ASHSH 0EZZ AA 500ZE0 SI UO DZIJOUIND Passaudxa 3100 JIM s Of SJUSI got feapunjayey S V EOSEd 7 s4 JO UOILDJIUNWUWO SU N AG PSHPa SD JUSUWNJOP SIYJ 40 UOHOZ PUD uon do anddns sealing Indy OND WWSZ ONS IMUNDISE mer AST N a le Tis fo gt ike me Ina r U IAI wv ul rm Res Ny gt onto WUG Z gt AL ui Ul ts gt gt gt gt gt 1Zdl gt Hiya WWS Z ONS und NS JMUNd Sal WUS Z GWS JMUNdise T cl WU E4NOA
46. riginal shipping carton and packing materials For maximum protection repack the unit as it was originally packed at the factory Environments Use this product only in E1 E2 E3 or E4 environments according to EN55103 2 Electromagnetic compatibility Product family standard for audio video and audio visual and entertainment lighting control apparatus for professional use Part 2 Immunity Ventilation and heat sink The heat sink is provided to ensure reliable operation of the Amplifier Unit and to protect it from overheating The heat sink must not be blocked or covered This product should not be installed unless proper ventilation is provided or manufacturer s instructions have been adhered to Water And Moisture Do not use this product near water for example in damp rooms or near a swimming pool Cleaning Unplug the Amplifier Unit from the wall outlet before cleaning Do not use liquid or aerosol cleaners Power cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon them or against them paying particular attention to cords and plugs and the point where they exit from the Amplifier Unit Lightning For added protection of the product during lightning storms or when it is left unattended and unused for long periods of time unplug it from the wall outlet This will prevent damage to the product due to lightning and power line surges Disconnection
47. s paths should be avoided The illustration Earthing and internal cabling diagram shows how a proper internal cable layout can be designed The illustration below shows recommended cables for internal and external use in RF noisy environments s v VV VVV OPEN PAIR PARALLEL PAIR TWISTED PAIR SHIELDED CABLE Large distance between Ensure that the distance The twisted pair is highly The highest immunity to cable pairs makes the between the leads in a immune to RF noise RF noise is by using layout prone to RF noise cable is as short as pos shielded cables Relevant signals sible in case of audio signals Please also note that a selection of EMC optimized Neutrik connectors are available to overcome possible EMC issues Designers Manual for Series X PRO amplifier modules Page 36 42 Version 1 6 Declaration on conformity with international EMC and EMI directives for admittance in the product s User s Manual The purpose of this section is to state the important declarations on conformity in accordance with international EMC and EMI directives which must be entered into the User s Manual for the final self powered loudspeaker product to obtain the international approvals Declarations for admittance in the product s User s Manual EC Declaration of Conformity in accordance to EC Directives electro magnetic compatibility Council Directive 89 336 EEC as amended by Directives 92 31 EEC and 93 68 EEC low voltage electrical
48. t The X PRO series circuit boards are not protected against water rain or excess humidity in any way and should under no circumstances be exposed to such Proper design precautions must be taken to prevent dust and dirt from clogging up on the circuit boards Dust and moisture are often the main cause for high voltage creepage and severe electric hazards In case of vented amplifier chassis designs dust filters therefore must be added Shock bump and vibration The circuit boards are designed to be built into professional loudspeakers and subwoofers and have been shock bump and vibration tested according to the following specifications The product is unpowered during vibration test After test the product is powered up to verify functionality Test Force Duration Random vibrations 3 Ome 3 x 20 min 6 directions Bump 2 4 Hz 15g 16 ms 1 000 bumps 6 directions Shock 105 g 16 ms 3 shocks 6 directions The product is powered and loaded according to 1 8 rated output power during vibration test Test Force Duration Sinusoidal vibrations 5 10 Hz 2 5 mm excursion 2 hours 6 directions Sinusoidal vibrations 10 150 Hz 1 5g 2 hours 6 directions Random vibrations 10 20 Hz 0 79 2 hours 6 directions Random vibrations 3 dB Oct 10 150 Hz 1 09 2 hours 6 directions IMPORTANT It is important that proper design precautions are taken when designing the amplifier chassis and the loudspeaker cabinet to ensure that the circuit boards are no
49. t exposed to excessive shocks bumps or vibrations Proper design precautions should always be taken to protect the amplifier unit against such stress Designers Manual for Series X PRO amplifier modules Page 13 42 Version 1 6 General electrical design information The X PRO series PCB is fitted with a flat ribbon cable connector ST 700 for amplifier inputs readouts and low voltage supply Furthermore amplifier outputs are placed as connector ST100 ST300 ST500 ST 702 is used as a fan output and is described under the section Fan Control The connector type is described in the cable production documentation in Appendix 1 Please see the figure below for connector placements 1700 ST702 ST500 T AA X T og i a E PN z x aE Tal o Cr ce Lae PE x U ST300 gt i RE 7 E EEES E a ma ea ER m sg 7 z z Oit ras P fic E 2 CELL i h _ See aT Eg ET an OS 1 bal 3 C1 seb NN 00000 IE RAS kn r Ol mg i ou MAE o XX ET LT SE LT ir 4 oo LT Pen Au FT fines E d Co C Jg p og LI A Eg i F The X PRO series PCB is also fitted with one Molex type connector ST9
50. th the wall socket mains fuse ratings secures that the mains fuse is not blown Below the PSUX PRO input RMS limiting can be seen from the below screen dump of the channel 1 amplifier outputs An indication of the SMPS being in RMS protection can be seen from pin 28 as the SMPS limit signal Testcondition Load 4 Ohm Vinpeak AV 1kKHz in a 6 5 second burst Dis read protect The Dis read protect pin is an active low pin indicating if any of the amplifier channels or the power supply is in disable or in protect mode indicating either an external shutdown or an on board fault protection condition The readout is available on pin 24 of ST 700 Clip limit off ch1 ch3 An on board input clip limiting has been implemented on all amplifier channels resulting in lowered THD levels at clipping Below is shown the input limiting on Ch1 during a burst signal input On the screen dump shown below Channel 4 on the oscilloscope shows the control signal for the limiter When the control signal for the limiter is Low the limiter is activated and the output signal is limited at the tops in order to reduce the THD levels The same signal can be seen from the clip output Channel 1 3 where a low level shows when the amplifier channel is in clipping When the amplifiers are running into heavy clipping the thermal stress on the X PRO series module is reduced by engaging the limiters It is always recommended to use the clip limiters Des
51. ue Klasing Kabel Flexible cable 14 AWG Cu UL Style 1015 VW 1 F 105 C 600 V E111235 EE De Mmes gt L Alternative Cables 1 2 Pin 1 EE Avro Kabel E194781 Pin 2 Medi Kabel E223795 Number of poles 2 Particularity for A211 Reference designators Red Blue Tolerance 5 mm 0 mm Drawing The copying distribution JHF 05 03 09 gt A Cc C Al and utilization of this document as well the Edited i Cation of it dren wie Version Date Author TS expressed authorisationis lt be held liable for the _ _ L loudspeaker Project A211 payment of damages Al rights reservedinthe event ae SEP Page of the grant of a patent 5 05 03 09 A211 1 utility model or ornamental Specification reference design registration Designers Manual for Series X PRO amplifier modules Page 38 42 Version 1 6 Appendix 1 2 Cable production documentation Mains In Cable specification ellow green Cu 14 AWG brown Cu 14 AWG blue Cu 14 AWG 1 2 4 OLE X COCO 4202 Live Molex Pin 1 Neutral Molex Pin 2 Earth Molex Pin 4 Xx cm Top view Number of poles Particularity Reference designators Tolerance 5 mm 0 mm Amount Part No Manufacturer Description 1 42021 4A Molex Plug Housing 3 42024 Molex Connector pin

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